December weather forecast and climate
Ithaca, NY

A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York
A stream of water flowing downstream from the Taughannock Waterfall in Ithaka, New York

Weather in December

The first month of the winter, December, is also a wintry month in Ithaca, New York, with average temperature varying between 33.6°F (0.9°C) and 24.1°F (-4.4°C).

Temperature

In December, the average high-temperature drops, from a chilly 44.1°F (6.7°C) in November, to a wintry 33.6°F (0.9°C). The average low-temperature, in Ithaca, is 24.1°F (-4.4°C).

Humidity

The average relative humidity in Ithaca is 86%.

Rainfall

In Ithaca, during December, the rain falls for 9.3 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Ithaca, during the entire year, the rain falls for 164.2 days and collects up to 32.56" (827mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Ithaca, during December, snow falls for 16 days and regularly aggregates up to 6.77" (172mm) of snow. In Ithaca, during the entire year, snow falls for 82.1 days, and aggregates up to 34.57" (878mm) of snow.

Daylight

With an average of 9.1h of daylight, December has the shortest days of the year in Ithaca.

Sunshine

The average sunshine in December is 2.9h.

UV index

Months with the lowest UV index in Ithaca are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to the UV radiation for the ordinary person.
Note: The daily maximum UV index of 1 interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Ithaca?

In Ithaca, New York, in December, the average high-temperature is 33.6°F (0.9°C), and the average low-temperature is 24.1°F (-4.4°C).

What is the average humidity in December in Ithaca?

In December, the average relative humidity is 86%.

How many days does it rain in December in Ithaca?

In Ithaca, New York, in December, during 9.3 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

How much does it snow in Ithaca in December?

In December, it is snowing for 16 days. Throughout December, 6.77" (172mm) of snow is accumulated.

What is the month with the shortest days in Ithaca?

With an average of 9.1h of daylight, December has the shortest days of the year in Ithaca, New York.

What is the average length of the day in December in Ithaca?

The average length of the day in December in Ithaca, New York, is 9.1h.

How many hours of sunshine does Ithaca have in December?

In Ithaca, the average sunshine in December is 2.9h.

What are the months with the lowest UV index in Ithaca?

Months with the lowest UV index in Ithaca are January and December, with an average maximum UV index of 1.

What is the UV index intensity in December in Ithaca?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
Ithaca, NY

Average temperature in December - Ithaca, NY
  • Average high temperature in December: 33.6°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.9°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure in December
Ithaca, NY

Average pressure in December - Ithaca, NY
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in December
Ithaca, NY

Average wind speed in December - Ithaca, NY
  • Average wind speed in December: 9.5mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in December
Ithaca, NY

Average humidity in December - Ithaca, NY
  • Average humidity in December: 86%

The month with the highest relative humidity is February (87%).
Months with the lowest relative humidity are April and May (79%).

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Average rainfall in December
Ithaca, NY

Average rainfall in December - Ithaca, NY
  • Average rainfall in December: 2.36"

The wettest month (with the highest rainfall) is June (3.62").
The driest month (with the least rainfall) is November (1.97").

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Average rainfall days in December
Ithaca, NY

Average rainfall days in December - Ithaca, NY
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (6.4 days).

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Average snowfall in December
Ithaca, NY

Average snowfall in December - Ithaca, NY
  • Average snowfall in December: 6.77"

The month with the highest snowfall is February (8.35").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Ithaca, NY

Average snowfall days in December - Ithaca, NY
  • Average snowfall days in December: 16 days

The month with the highest number of snowfall days is January (18.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Ithaca, NY

Average daylight in December / Average sunshine in December - Ithaca, NY
  • Average daylight in December: 9.1h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in December: 2.9h

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is February (Average sunshine: 2.5h).

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Average sunshine days in December
Ithaca, NY

Average sunshine days in December - Ithaca, NY
  • Average sunshine days in December: 8.5 days

The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (6.8 days).

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Average UV index in December
Ithaca, NY

Average UV index in December - Ithaca, NY
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in December
Ithaca, NY

Average cloud cover in December - Ithaca, NY
  • Average cloud cover in December: 72

The month with the most cloud cover is February (Cloud cover 75).
Months with the least cloud cover are July and August (Cloud cover 38).

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Average visibility in December
Ithaca, NY

Average visibility in December - Ithaca, NY
  • Average visibility in December: 5mi

Months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
Months with the lowest visibility are January and February (4mi).

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